Science In Everyday Life Solutions for Class 6 Science Chapter 5 Sorting Materials Into Groups are provided here with simple step-by-step explanations. These solutions for Sorting Materials Into Groups are extremely popular among Class 6 students for Science Sorting Materials Into Groups Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the Science In Everyday Life Book of Class 6 Science Chapter 5 are provided here for you for free. You will also love the ad-free experience on Meritnation’s Science In Everyday Life Solutions. All Science In Everyday Life Solutions for class Class 6 Science are prepared by experts and are 100% accurate.

Page No 66:

Question 1:

Name the different properties that materials have.

Answer:

The following are the properties of materials.

  1. Roughness or smoothness
  2. Hardness or softness
  3. Transparency, translucency or opaqueness
  4. Physical state (solid, liquid or gas)
  5. Appearance (shiny or dull)
  6. Solubility or insolubility in water
  7. Heaviness or lightness with respect to water
  8. Attraction towards magnet
  9. Conduction of heat
  10. Conduction of electricity

Page No 66:

Question 2:

How are rough materials different from smooth materials? Give two examples of each.

Answer:

 

Rough material Smooth material
It has an irregular and uneven surface with bumps or ridges and is not smooth to touch. It has an even or a flat surface free from irregularities, roughness or bumps and is smooth to touch.
Examples: Sandpaper, jackfruit Examples: Plastic sheet, mirror

Page No 66:

Question 3:

What is lustre? Give two examples of materials that possess lustre.

Answer:

Materials that have a shiny appearance are said to have ‘lustre’. Metals such as gold, silver, copper and aluminium are among materials that have this quality.

Page No 66:

Question 4:

What are miscible and immiscible liquids? Give three examples of each.

Answer:

Miscible liquids: Two liquids are said to be miscible if they mix or dissolve completely in each other to give a single liquid phase and are difficult to separate.
Examples:

  1. Vinegar and water: Vinegar mixes with water completely to form a single layer.
  2. Alcohol and water
  3. Kerosene and petrol
Immiscible liquids: Two liquids are said to be immiscible if they do not mix or dissolve in each other completely and form two distinct layers and can be separated easily.
Examples:
1. Vinegar and oil
2. Mustard oil and water
​3. Alcohol and kerosene
​

Page No 66:

Question 5:

Name two gases that are soluble in water.

Answer:

Oxygen and carbon dioxide dissolve in water, i.e., they are soluble in water.

Page No 66:

Question 6:

What are magnetic materials? Give two examples of metals that are magnetic.

Answer:

Magnetic materials are substances that are strongly attracted by magnets and can be turned into magnets.
Iron and cobalt are examples of magnetic materials.

Page No 66:

Question 1:

Write two examples for each of the following.

1. Rough materials ........................ ........................
2. Materials with lustre ........................ ........................
3. Translucent materials ........................ ........................
4. Miscible liquids ........................ ........................

Answer:

1. Rough materials Bricks Tree bark
2. Materials with lustre Diamond Silver
3. Translucent materials Butter paper (tracing paper) Ground glass
4. Miscible liquids Lemon juice and water Milk and water

Page No 66:

Question 2:

Write one word for the following.

1. Materials that allow all the light to pass through them .................
2. Materials that allow some light to pass through them .................
3. Liquids that are insoluble in water .................
4. Materials that do not conduct electricity .................

Answer:

1. Materials that allow all the light to pass through them Transparent
2. Materials that allow some light to pass through them Translucent
3. Liquids that are insoluble in water Water-immiscible or water-insoluble
4. Materials that do not conduct electricity Insulators

Page No 66:

Question 1:

Write T for the true statement and F for the false one. Correct the false statements(s).
1. A stainless steel pan is opaque.
2. All gases have definite shape.
3. Oil dissolves in water.
4. A paper boat will sink in water.

Answer:

1. A stainless steel pan is opaque. T
     
A stainless steel pan is opaque because we cannot see through it.

2. All gases have a definite shape. F

Gases have no fixed shape, and they fill a container of any size and shape completely.

3. Oil dissolves in water. F

Oil and water do not mix with each other and form two separate layers of oil and water.
 
4. A paper boat sinks in water. F

A paper boat floats in water because it is lighter than water.

Page No 66:

Question 1:

Which of the following has lustre?
(a) Wood
(b) Salt
(c) Gold
(d) Glass

Answer:

(c) Gold

Gold has a shiny appearance because it reflects light, and so it is said to have lustre.

Page No 66:

Question 2:

Which of the following cannot be compressed?
(a) Liquids
(b) Solids
(c) Gases
(d) None of the above

Answer:

(b) Solids
The particles of a solid are in a fixed position and are very close to one another. Thus, they are not free to move. Hence, solids cannot be compressed.

Page No 66:

Question 3:

Which of the following is not a characteristic feature of a gas?
(a) Definite shape
(b) Definite volume
(c) Particles closely packed
(d) All of them

Answer:

(d) All of them

Gases have no fixed volume or shape. They fill a container of any size and shape completely. The separations between the particles of a gas are quite large, giving the particles complete freedom of motion.

Page No 66:

Question 4:

Wooden objects are
(a) transparent
(b) translucent
(c) opaque
(d) soluble

Answer:

(c) opaque

Wooden objects are called opaque because we cannot see anything through them.

Page No 66:

Question 5:

Which of the following is an insulator?
(a) Metals
(b) Plastic
(c) Wood
(d) Both b and c

Answer:

(d) Both b and c

Plastic and wood do not allow heat or electricity to flow through them, and so they are insulators.



Page No 67:

Question 1:

How are different materials grouped depending on transparency.

Answer:

All materials can be divided into three groups on the basis of transparency as follows -
(i) Transparent materials: Materials that allow all the light to pass through them are transparent materials. Examples: Glass, water and air.
 (ii) Translucent materials: Materials that allow only a small amount of light to pass through them are translucent materials. Examples: Butter paper, coloured glass and muddy water.
(iii) Opaque materials: Materials that do not allow any light to pass through them are opaque materials. Examples: Cardboard, wood, metals, bricks, stones and books.

Page No 67:

Question 2:

Give three characteristics each of a solid, liquid, and gas.

Answer:

Solids:
(i) Solids are rigid, do not flow and are incompressible.
(ii) A solid keeps its shape unless a force is applied to it. It has a definite volume.
(iii) The particles of a solid are in a fixed position and are very close to one other. 

Liquids:
(i) Liquids are almost incompressible but less incompressible than solids.
(ii) Liquids have a fixed volume but no fixed shape.
(iii) The particles of a liquid are not in a fixed position and are a little further apart than the particles of a solid. Thus, the particles of a liquid are free to slide and flow.

Gases:
(i) Gases can be compressed easily by applying pressure.
(ii) Gases have no fixed volume or shape.
(iii) Gases can diffuse into each other rapidly.



View NCERT Solutions for all chapters of Class 6